1 Greek Mythology one of the Titans, wife of Cronus and mother of Zeus, Demeter, Poseidon, Hera, and Hades. Frightened of betrayal by their children, Cronus ate them; Rhea rescued Zeus from this fate by hiding him and giving Cronus a stone wrapped in blankets instead.
2 Astronomy a satellite of Saturn, the fourteenth closest to the planet, discovered by Cassini in 1672 (diameter 1,530 km).
